LD_PRELOAD and LD_AUDIT are the features of the dynamic linker or ld.so. The dynamic linker is a process to read an executable and DSOs in memory, fix up images

LD_PRELOAD and LD_AUDIT are the features of the dynamic linker or ld.so. The dynamic linker is a process to read an executable and DSOs in memory, fix up images in memory to make it really ready to be executed by a CPU. lld is a linker which creates executable or DSO files. That is different from the dynamic linker.